The Thunder God | The Legend of Heroes: Trails into Reverie 

Rean and his students found themselves in a bizarre Situation when the Thunder God challenges them to beat him and Claire in a certain time limit. After that test, the Party learned later that day about the events in Crossbell and as well about the Reborn Imperial Liberation Front.
Boss: Major Rieveldt / Thunder God Matteus
Difficulty: Hard
Note: This is a NG+, however Equipment and Quartz are set to match the Chapters of the Story
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Intro:
Video: The Legend of Heroes: Trails of Cold Steel II - Opening
Music: Aka Ki Tsubasa Aratanaru Kaze
Album: The Legend of Heroes: Sen No Kiseki (Original Soundtrack)
Copyright © Nihon Falcom Corporation
Outro:
Video: The Legend of Heroes: Trails in the Sky The Animation
Music: Hamel Thing Remains
Album: The Legend of Heroes: Sen No Kiseki III Original Soundtrack
Copyright © Nihon Falcom Corporation